US5267061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-interfering viewing systems for use in catadioptric projection systems
Assignee: Raytheon Co
•
Filing: 1992-06-12
•
Granted: 1993-11-30
•
Expires: 2012-06-12
Abstract
Abstract Selective light-transmitting filters for use with catadioptic area-of-interest display projectors and projection system provide complementary filters for two or more persons. One of the complementary filters permits all radiance at one predetermined, desired wavelength to be transmitted while rejecting or absorbing all others. The complementary filter for a second viewer transmits substantially all radiance at a second predetermined desired wavelength and absorbs or reflects all others, thus permitting each viewer to see only predetermined, desired displays or parts of a display that are projected simultaneously within the system.
Inventors
- 👤 David A. Ansley
- 👤 Eric C. Haseltine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:25
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/0101; G09; G09B; G09B9/00; G09B9/003; G09B9/02; G09B9/08; G09B9/30; G09B9/32; G09B9/326; G02B2027/0118; G02B2027/012; G02B27/0179; G02B2027/0187; G02B5/00; G02B5/20; G02B5/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
217 words
A complementary viewing system for a first and second viewer simultaneously using said system comprising: means for directing a first image toward the first viewer, while simultaneously directing a second image toward the second viewer, said first image being at least partially in the field of view of the second viewer and the second image being at least partially in the field of view of the first viewer; first selective light transmitting means positioned in the path of the images directed toward said first viewer, said first selective light transmitting means for transmitting the first image to the first viewer, said first image comprising radiance at substantially only a first predetermined wavelength, and said first selective light transmitting means for rejecting or absorbing substantially all radiance at substantially all other wavelengths; and second selective light transmitting means positioned in the path of the images directed toward said second viewer, said second selective light transmitting means for transmitting the second image to the second viewer, the second image comprising radiance at substantially only a second predetermined wavelength which is different from said predetermined wavelength and said second selective light transmitting means for rejecting or absorbing substantially all radiance at substantially all other wavelengths, whereby each viewer can simultaneously view a respective image without interference by the other image.
Claim 2
Dependent Claim
217 words
A complementary viewing system for a first and second viewer simultaneously using said system comprising: means for directing a first image toward the first viewer, while simultaneously directing a second image toward the second viewer, said first image being at least partially in the field of view of the second viewer and the second image being at least partially in the field of view of the first viewer; first selective light transmitting means positioned in the path of the images directed toward said first viewer, said first selective light transmitting means for transmitting the first image to the first viewer, said first image comprising radiance at substantially only a first predetermined wavelength, and said first selective light transmitting means for rejecting or absorbing substantially all radiance at substantially all other wavelengths; and second selective light transmitting means positioned in the path of the images directed toward said second viewer, said second selective light transmitting means for transmitting the second image to the second viewer, the second image comprising radiance at substantially only a second predetermined wavelength which is different from said predetermined wavelength and said second selective light transmitting means for rejecting or absorbing substantially all radiance at substantially all other wavelengths, whereby each viewer can simultaneously view a respective image without interference by the other image.
Claim 3
Dependent Claim
14 words
system of claim 1 wherein said viewing system includes catadioptric area of interest displays.
Claim 4
Dependent Claim
13 words
The system of claim 1 wherein said first transmitting means is a filter.
Claim 5
Dependent Claim
13 words
The system of claim 3 wherein said first and second wavelengths are infrared.
Claim 6
Dependent Claim
14 words
The system of claim 3 wherein said first selective light transmitting means comprises goggles.
Claim 7
Dependent Claim
14 words
The system of claim 3 wherein said second selective light transmitting means comprises goggles.
Claim 8
Dependent Claim
27 words
The system of claim 1 wherein said second transmitting means is selected from the group consisting of a single holographic element, multiple holographic elements, or thin films.
References Cited (Backward Citations)
US3917399A
Cited
US4106855A
Cited
DE2702496A1
Cited
US4134644A
Cited
GB1598040A
Cited
US4202601A
Cited
US4775217A
Cited
US4620770A
Cited
US4834515A
Cited
US4786966A
Cited
US4884137A
Cited
US4947291A
Cited
EP0396128A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |